body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    margin-bottom: 20px;
    text-align: center;
    background-color: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header h1 {
    margin: 0;
    color: #2c3e50;
}

.header input, .header button {
    padding: 8px 15px;
    margin: 10px 5px 0;
    border-radius: 4px;
    border: 1px solid #ddd;
}

.header button {
    background-color: #3498db;
    color: white;
    border: none;
    cursor: pointer;
}

.header button:hover {
    background-color: #2980b9;
}

.dashboard {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.chart-box, .table-box {
    flex: 1;
    min-width: 300px;
    background-color: white;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.table-box h3 {
    margin-top: 0;
    color: #2c3e50;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.chart {
    width: 100%;
    height: 300px;
}

.table {
    width: 100%;
    overflow-x: auto;
}

@media (max-width: 768px) {
    .row {
        flex-direction: column;
    }
    
    .chart-box, .table-box {
        min-width: 100%;
    }
}
